fix(client)!: Return errors if client setup fails rather than log.fatalf

BREAKING CHANGE: NewAPIClient returns `(*APIClient, error)`

Author: spbsoluble

api/keyfactor/client.go

@@ -4,9 +4,9 @@ go 1.23
 
 toolchain go1.23.2
 
-require github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.2
+require github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.7
 
 require (
-	golang.org/x/oauth2 v0.23.0 // indirect
+	golang.org/x/oauth2 v0.24.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )

go.mod

@@ -1,9 +1,9 @@
-github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.2 h1:/61pAEjAhTAGtFCvAcp04qEZWV9pMYH5fxADReN2KdU=
-github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.2/go.mod h1:UTPLARTONwfc+j1y2SjEa54gbFFCObQucHf3ubQVyDk=
+github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.7 h1:s97WeaaqeU2ULJIQtOReHHoC9k+VYQFK6to/SPZI850=
+github.com/Keyfactor/keyfactor-auth-client-go v1.0.0-rc.7/go.mod h1:UTPLARTONwfc+j1y2SjEa54gbFFCObQucHf3ubQVyDk=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/oauth2 v0.23.0 h1:PbgcYx2W7i4LvjJWEbf0ngHV6qJYr86PkAV3bXdLEbs=
-golang.org/x/oauth2 v0.23.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.24.0 h1:KTBBxWqUa0ykRPLtV69rRto9TLXcqYkeswu48x/gvNE=
+golang.org/x/oauth2 v0.24.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=